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Earnings per Share Earnings per Share (Tables) | 3 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The table below presents a reconciliation between basic and diluted weighted average shares outstanding, net income, and basic and diluted income per share for the three months ended March 31, 2023 and 2022:
| Three Months Ended |  |
| March 31, |  |
(In thousands, except per share amounts) | 2023 |  | 2022 |  |  |  |
NUMERATOR |  |  |  |  |  |  |
Net income | $ | 103,066 |  |  | $ | 91,839 |  |  |  |  |
DENOMINATOR |  |  |  |  |  |  |
Basic weighted average shares outstanding | 27,602 |  |  | 28,424 |  |  |  |  |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock option awards | 378 |  |  | 336 |  |  |  |  |
Deferred compensation awards | 325 |  |  | 312 |  |  |  |  |
Diluted weighted average shares outstanding | 28,305 |  |  | 29,072 |  |  |  |  |
Earnings per common share: |  |  |  |  |  |  |
Basic | $ | 3.73 |  |  | $ | 3.23 |  |  |  |  |
Diluted | $ | 3.64 |  |  | $ | 3.16 |  |  |  |  |
Anti-dilutive equity awards not included in the calculation of diluted earnings per common share | 266 |  |  | 434 |  |  |  |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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